Meebitt gally



(N6 Model.) v

M. GALLY.

v STOP MOVEMENT FOR PRINTING, EMBOSSING, AND POWER PRESSES.

'Pa,tented Nov. 6, 1883.

\ V \x e Inventor Witnesses Z; "7 I! I N. PETERS. Pholo-Mhngnphcr. Wuhmmon. D. c.

A UNITED {ST TES PATENT i OFFICE; I

' MERRITT GALLY, on new YORK, n. Y.

STOP-MOVEMENT FOR PRINTING, zmaos'sme, ANDYPOWER PRES-SE8.

SPECIFICATION forming part of Letters Patent Ho. 287,821, dated November 6, 1883.

Application filed May 23,1883. (No model.)

To all whom it may concern.-

Be it known that I, MERRITT GALLY, a citizen of the United States, and a resident of New York city, in the county and State of New York, have invented a new and useful- Improvement in Stop Motions for Printing- Presses, Embossing, Stamping, and Cutting Machines, of which the following is aspec'i'fication. r 1

In the accompanying drawings, Figure 1 is a rear view of a press for printing, embossing,

or stamping, showing the gearing, fly-wheel,

driving-belts, clutch, shifters, &c., and other parts of the stop-movement. Fig. 2;is a side view of the bed and platen, of the press, with impression crank -wheel and draw-bar; and

.Fig. 3 is a diagram showing the position of the shifting-cams of the shifting-wheel.

In doing very heavywork on a press for printing, embossing, stamping, or the like, it is desirable that the press be run at veryhigh speed and have a very heavy fly-wheel for carrying it over the impression. It is often the case that there is not a sufficient period of rest to the movable bed or platen between the times of impression to properly lay or prepare the work for each successive impression. In a press with an ordinary impression-toggle for producing the impression the toggle is usually constructed so that it can be thrown out of connection and one or more impressions skipped, leaving the bed or platen on which the workis tobe laid quiet until another impression is needed, during which time all the remaining machinery is kept in motion. It is difficult in presses having a crank-impression, or any continuously-moving impression mechanism, to construct a throw-off for the platen that will leave it for an indefinite period of rest with all of the remainder of the machinery kept in motion, and at the same time retain sufficient strength for the impression. Stopping and starting the press by stopping and starting the fly-wheel for each impression is impracticable, and stopping and starting the machinery ,of the press by suddenly disconnecting and connecting it with a continuously-revolving fly-wheel produces a disagreeable stroke and unsafe jar of the machinery.

In connection with the press shown in the sion. 7 I use the power transmitted by belt G and fly-wheel only during that portion of each entire movement of the,press which carries the impression'crank-wheels over the f nip, which in Fig. 2 comprises thatarc of thecircle. of movement of the crank-wheel B which lies between 2 and 3. From 3 to 1 the movement of the press is produced-by the independent pulley N and belt P, and as there is no fly-wheel in connection with the machinery of the press connected to the driving-shaft during this movement, the press is easily and suddenly stopped by the automatic shifter Sat the moment the platen reaches its position to receive the article to be printed or stamped. There are two automatic shifters in the mechanism. The shifter J operates automatically for connecting and dis- .connecting the clutch K of the driving-shaft Z with the fly-wheel E, and the shifter S operates automatically for stopping the movement of driving-shaft Z. A foot-lever, I, or other appropriate device connects with shifter S, by means of which the operator shifts thebelt P from loose pulley N to tight pulley N whenever he wishes the press to make a movement for'an, impression The impression gearwheels B are geared to shaft Z by means of pinions II H, and shifting-wheel R is geared to the same shaft, Z, by means of pinion L.

' Wheel It moves only when wheel B is in motion, and they have an equal number of revolutions. Wheel B has on it three shiftingcams, a e f, which, in relation to the shifters,

correspond with the positions of rest and movement 1 2 30f wheel B, Fig. 2. Cams 6 and f operate in connection with. the fork n or two arms of shifter J. The speeds of flyfoo wheel E and pulley N are equal. Vhen the operator wishes to start the press for an impression while the heavy fly-wheel is under full speed, he operates shifter S by means of foot-lever I, throwing belt Ifrom loose pulley N to tight pulley N. By moving the shifter S carefully, the press is started, by means of driving-shaft Z, quietly and without jar, and the impression-wheels revolve through the are from 1 to 2. At this movement camcof shifting-wheel R reaches the fork n of shifter J and automatically throws the clutch K of shaft Z into connection with the fiy-wheel E, which carries the press over the impression while the impression-cranks are passing through the are from 2 to 3. \Vhenthe cranks reach 3, the cam f reaches the fork a of shifter J, and the clutch K is automatically disengaged, leaving the power of belt 1? alone to carry the machinery of the press until the impression-cranks reach the point of rest at 1, when cam a automatically shifts belt 1 onto its loose pulley by means of a return movement of shifter S, and the motion of the press is stopped, having made one entire movement. Fig. 3 shows the position of the cams 011 wheel 1%.

Vhen inking apparatus is used on the press, the ink-distributing cylinders D are kept in motion by means of the belt t, connecting with the pulley forming a part of the hub of flywheel E.

The stop-motion as described has advantages over that even of toggle-presses. In the toggle-press the toggle can be thrown into connection only at certain times, and if the operator is ready for an impression an instant after the time for locking the toggle is passed, he must wait the entire period of time for another complete movement of the press before he can get an impression. Besides this disadvantage, the operator is disturbed in his work by being obliged to constantly watch the movement of the machinery to know just where he can throw in the toggle. Vith my invention the operator can start the movement of the platen at any instant without losing a moment. There is no jar or stroke in the operation of the mechanism, as when the time for clutching-the fly-whee1 arrives, fly-wheel and machinery are both at operating-speed.

I make the cam a removable from wheel B, so that if it is desirable to make an impression in the time of every ordinary movement of the press, the machinery will not be automatically stopped.

If it is desirable to run the press at a high rate of speed to produce a striking impression and have the impression occur at intervals of time not corresponding with the single entire rotation of the shaft of the press, I accomplish it by connecting with the hub of loose pulley N a gear similar in its operations to L R,which shall at certain intervals of time,

shift belt 1 onto its tight pulley N. Interchangeable gears can be used for this purpose, corresponding with different intervals of time,

the combination, with the clutch for connectingthe driving-shaft to the continuously-rotating fly-wheel, of an automatic shifting device operated by power independent of the movement of the fly-wheel.

2. The combination, with the continuouslyrevolving fly-wheel, the driving-shaft of the machine, and the clutch therefor, of mechanism, substantially as described, for operating said clutch, said mechanism being geared to the driving-shaft, as set forth.

3. The combination, with the continuouslyrotating fiy-wheel, the driving-shaft of the machine, and a clutch therefor, of power mechanism, substantially as described, independent of the movement of the fly-wheel for operating said clutch, as set forth.

4. The combination, with the continuouslyrotating fly-wheel, the driving-shaft of the machine, and a clutch therefor, of an automatic device, substantially as described, for automaticall y engaging and disengaging the clutch.

5. The combination, with a continuously-revolving fly-wheel, the driving-shaft, and the clutch therefor, of mechanism, substantially as described, for operating said clutch, and a device, substantially as described, for throwing said mechanism into and out of operation automatieally, as set forth.

6. The combination, with the continuouslyrotating fly-wheel and the driving-shaft of the machine, an automatic clutch therefor, and a device, substantially as described, under the control of the operator, for bringing into action the mechanism which operates the automatic clutch, of an automatic mechanism, substantially as stated, for discontinuing the movement of the mechanism which operates the automatic clutch.

7. The combination, with the continuouslyrotating fly-wheel, the driving-shaft of the machine, and a clutch therefor, of an automatic shifter for engaging and disengaging the clutch, a belt with tight and loose pulley for operating the shifting mechanism, and an automatic shifter for throwing the belt from tight to loose pulley.

8. The combination, with the continuouslyrotating fly-wheel, the driving-shaft of the machine, and an automatic clutch for connecting and disconnecting the fiy-wheel and drivingshaft, of an automatic mechanism for operatthe fly-wheel and driving-shaft, constructed,

substantially as described, to operate between the time of starting of the machine and the time of the heavy pressure of the machine, which requires the momentum of the fly-wheel.

10. The combination, with the continuouslyrotating fly-wheel, the driving-shaft'of the machine and its driving mechanism, and an automatic clutch for connecting the fly-wheel and driving-shaft for the period of impression, of

20 an automatic device, substantially as described,

'for stopping the movement of the drivingshaft for the time of rest of the bed or platen which receives the article to be'printed or stamped.

11. The method herein described of driving a press,which consists in propelling the mechanism by oneqiower deviceand automatically throwing into operation a second power device to assist it past the nip, substantiallyas Set forth.

12. The combinati on,with the continuouslyrOtating fly-wheel, the driving-shaft of the machine, and an automatic device, substantially as described, for connecting and disconnecting the fiy-wheel and driving-shaft, of ink-dis tributing apparatus connected with the flywheel. 1

MERRITT GALLY.

WVitnesses ROB RT A. GALLY, WVM. A. GALLY. 

